Wrapping and unwrapping machine



W. C. STEVENS. WRAPPING AND UNWRAPPING MACHINE. APPLICATION FILED NOV.19. I917.

Patented Oct. 25, 1921" 3 SHEETSSHEET I. N

W. C. STEVENS. WRAPPING AND UNWRAPPING MACHLNE.

APPLICATION FILED NOV-19. 1917 m w a 3 Mi WW 5 1 m J nhlit|a| 1 1 W q M,T g w a Q mu a W. C. STEVENS.

WRAPPING AND UNWRAPPING MACHINE.

APPLICATION FILED NOV. 19, I917.

Patented Oct. 25, 1921.

3 SHEETSSHEET 3.

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UNITED. STATES PATENT" mm.

WILLIAM C. STEVENS, OE SUMMIT COUNTY, OHIO, ASSIGNOR To THE F &-RUBBERCOMPANY, OF AKRON, OHIO, A CORPORATION OF TONE man 01:10.

WRAPPING AND UNWRAPPIN MACHINE.

Specification of Letters Patent.

Patented Oct. 25, 1921.

Application filed November 19, 1917. Serial No. 202,765.

To all whom it ma concern:

Be it known that WILLIAM C. S'rnvnne, a citizen of the United States,residing in the county of Summit, State of Ohio, ave invented certainnew and useful improvements in Wrapping and Unwrapping Machines, ofwhich the following is a specifiecation.

in the manufacture of pneumatic tires one of the methods ofvulcanization is known as the two cure rocess, in which a tread stri isapplied a ter the principal portion of t e casing has been partiallycured, and is then wrapped with cloth and the whole casing given itsfinal cure. Lil he machine constituting the subject of this invention isdesigned to wrap the tires and to unwrap them after being cured, only aslight adjustment being necessary to change the function of the machine.

In the drawings accompanyin this application 1 have illustrated one emodiment of the machine, in which:

Figure 1 is a side elevation,

Fig. 2 is an end view, I

Fig. 3 is a fragmentary view of a portion of the shuttle,

Fig. 4 is an end elevation of the parts shown in Fig. 3, partly insection and.

Fig. 5 is a fragmentary view of the spool carrying arm in position forrewinding the wra per. 7

T e machine is carried on a base plate 1, at either side of which rise aproximately A-shaped standards 2 and 3 w ich support the "operatingparts of the machine. The machine is driven by a motor or other sourceof power which is indicated by the numeral 4 carrying a pinion 5 in meshwith gear 6 on the main shaft 7 of the machine. Any suitable clutchmechanism may be. carried on the shaft 7, this part being indicated bythe numeral 8 operated by lever 9 which in turn is o erated b a handlever 10 pivoted in a brac ret 11. 'lhrough the clutch mechanism, bysuitable gearing 12, a. countershaft 13 is rotated, which carries apulley l4 and also a sprocket wheel 15. j

As is usual in machines of this character there are two main elements,the core or tire carrying and rotatin elements and the shuttle orwrapping supp these two parts being so arranged that they rotate ininterlocking relation.

second idler 18 and finally The tire carryin and rotatin ele e I themachine will flit be describ ed. m nt of About the sprocket wheel thereis carried a chain 13 which passes over an ad ustable idler sprocket 17,thence over a over a driven sprocket 19, fastened to the end of a wormshaft 20 carried in a bracket 21 secured to the upper end of thestandard 2. The shaft 20 carries a worm 22 which drives a worm gear 23at one end of ashaft 24, which is mounted for rotation in parallelbearings 25 carried on a plate 25 to the upper inside surface of thestandard 2 by bolts 26 passing through slots 27 in the standard. Act theforward end of the shaft 24 is carried a flanged roller 28 whichsupports the core and tire in position to be wrapped and by the rotationof which the core and tire maybe revolved. By means of the slots 27 theplate 25 can be adjusted vertically so that tires of different sizes maybe presented to the wrapping shuttle at the exact center. The worm gear23 is which is secured loosely mounted on the shaft 24 but may beconnected in driving relation by a clutch 29 which may be operated by abell crank 30 pivoted in the bracket 21 and connected by a link 31 to apedal 33. An auxiliary supporting roller 34 wh1ch runs idly is mountedon the upper end of standard 3. A vertical guide or steadying roller 35is carried at its upper end in a t1e-plate 36 joining the standards 2and 3, the lower end being supported on a bearing 37 in the front of thebase-plate.

On the inner face of the standard 3 is formed a vertical dove-tailguideway 38, on which is slidably mounted a plate 39 depending from acircular bearing plate '40 having a swinging portion 41 adapted to beheld in closed position by a pin and lock 42 of any well-knownconstruction. The inner side of the bearing plate 40 and the swingingportion 41 is formed smooth so as to present an endless track forpurposes to be presently described. A set screw 42 is arranged ina'bracket 43 on the side of the standard 3 and serves to support thebearing platein any position of vertical adjustment. A second bearinplate 44 in the form of a three-quarter circ e is arranged opposite tothe plate 40 and connected with it by pins 45. On the pins 45 are carnedfoot lever 32 carrying a rollers 46 which support the shuttle orwrapper-carrier, designated generally by the numeral 47. The rol ershave enlargedcentral portions as shown at 18, which are received betweenflanges 49 on the outer periphery of the shuttle. A. belt 50 passesfromthe pulley it over an idler 5i and thence over the upper rollerl6and ad acent the outer periphery of the shuttle between the flanges 49and around the lower roller l6, and thence over an adjusting idlerpulley 52 to the pulley 1%. By means of the belt the shuttle may berapidly rotated in one plane while the core and tire are being rotatedina plane at right angles to it. The roller 52 is carried on ahorizontally movable slide 53 which is carried on the plate 39, a rod 54being connected to the slide and extended rearwardly therefrom andthrough a boss 55 onthe plate 39. A coilspringfofi is arranged about therod and serves to urge the pulley 52 inwardly, thus maintaining theproper tension on the belt and automatically regulating the tension ofthe belt when the shuttle carrier and supporting rollers are adjustedrelative to one another.

At one point of the shuttle is pivotally -mounted a stub shaft 57 in onedirection from which extends a pair of parallel arms 58in the ends ofwhich is mounted a rotatable spool shaft 59, which passesthrough anenlarged aperture 60in the shuttle. One end of the shaft 59 is designedto carry and turn with'the wrapping spool 61, and the other end to carrya pulley 62 arranged to travel over the inside of the bearing plate 40.This pulley 62 is covered with leather, or other suitable substance,which will suffice to drive the pulley as it passes over the track. Afriction brake 63 is arranged to bear upon the surface of theroll offabric being carried on the end of a pivoted lever 64 and held againstthe surface of the roll by a spring 65. From the roll the fabric in thewrapping operation passes over a pair of tensionmg pins 66 which arecarried on a circular plate 67, pivotally mounted on the shuttle andsecured in correct position of adjustment by a bolt 68, operating in anarcuate slot 69. One of the arms 58, preferably the one on the same sideas the pulley 62, is extended in direction on the opposite side of thepivot 57 as shown at 70, the end of the arm being adapted to be engagedby a swinging hook 71- Theqpurpose of the hook is to hold the arm in theposition shown in Fig. 3 when the machine-is being'used as a wrappingmachine, in which position. the pulley 62 is out of contact with thetrack 40, and the spool is,-therefore, free .to'junl'l wind as requiredfor wrapping purposes. When it is desired to use the machine forunwrapping, the hook 71 is released and the arm 58 moves about its pivotundefthe in.-

fiuence of this spring 7:2 until the pulley contacts withthetrack e0.When t is is done the arm 64- carrying the brake 63 is removed u iwhereupon the spring will ho d it away fromthe spool.

The shuttle is provided with a segment 73 which is adapted to be swunginwardly or sidewise of the main position in order to allow the tire tobe laced in the machine, the movable segment eing brought into line withthe movable portion ii of the track and the gap between the ends of theplate at when it is desired to insert or remove th tire.

It is believed that the operation of the machine will be clear from thedescription. so far given. The tire carriers 28 and 34 having beenadjusted to the proper height by the bolts 26 and slots 27 and theshuttle carrier being adjusted by the bolt- 42', the machine is openedtoreceive a tire which is desired to be wrapped, being placed for thispurpose on the rollers 28 and 34. The lead ing end of the fabric isbrought from the spool through the tension ins and attached to the endof the tire. The clutch 8 being in idle or non-driving relation isthrown in by the hand-lever 10 and the machine is started. If desiredthe clutch 29 may be open, in which case a few turns of cloth may belaid over the core and then the treadle 33 is depressed and the core isrotated. The combined rotation of the shuttle and tire serves to lay upthe wrapping in superposed ter as the spool builds up.

It is obvious that var1ous changes and modifications may be made in themachine without departing from the principles of the invention orsacrificing any of its benefits.

" I claim:

1. In a machine of the character described. the combination of a carrierfor an object to be wrapped or unwrapped, means to rotatethe object, ashuttle rotating in a plane atriglitgangles to the plane of the object,a

, bearing plate for said shuttle" having a circular track, a pivotedsupport on the shuttl' egiig sppol holder on said support, a pulleyconnected with said spool holder, means adapted to. rock said support tobring said pulley in contact. ith the track, and a lockemons 8 in};member adapted to hold. said support port, a movable spool holder arm, aspool with the pulley out of contact with the shaft carried on said arm;a friction drive track. pulley connected with the spool shaft, means it2. In a machine 'of the character described, to maintain the ulley outof contact with the combination of an object supporting and said trackor to orce it into contact thererotating means, a stationary support, awith.

smooth circular track carried by sald sup- WILLIAM C. STEVENS.

